tb_domain_add(9)

✨ NAME ✨

tb_domain_add — Add domain to the system 💖

okay so bestie, this is the Kernel API Manual page for tb_domain_add(9), and it’s literally the “put your domain on the system” moment 🫶✨

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🌈 SYNOPSIS 🌈

int tb_domain_add (struct tb *tb , bool reset );

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🎀 ARGUMENTS 🎀

• tb — Domain to add 💅
• reset — Issue reset to the host router ⚡

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🦋 DESCRIPTION 🦋

Starts the domain and adds it to the system. Hotplugging devices will work after this has been returned successfully — that’s the whole vibe, no cap 🔥

In order to remove and release the domain after this function has been called, call tb_domain_remove. That’s your cleanup bestie, don’t ghost it 😭💖

bestie reminder: after tb_domain_add has been called, the removal-and-release path is tb_domain_remove 🎀

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⭐ RETURN ⭐

• 0 on success 🥳
• negative errno otherwise 😬

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👑 SEE ALSO 👑

The kernel file is ./drivers/thunderbolt/domain.c, and the whole bestie lineup is:

• tb_domain_alloc(9)
• tb_domain_remove(9)
• tb_domain_suspend_noirq(9)
• tb_domain_resume_noirq(9)
• tb_domain_disapprove_switch(9)
• tb_domain_approve_switch(9)
• tb_domain_approve_switch_key(9)
• tb_domain_challenge_switch_key(9)
• tb_domain_disconnect_pcie_paths(9)
• tb_domain_approve_xdomain_paths(9)
• tb_domain_disconnect_xdomain_paths(9)
• tb_domain_disconnect_all_paths(9)

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Source/version: ./drivers/thunderbolt · date: October 2026 · page: tb_domain_add(9) — bye bestie, slay responsibly 💋💅✨